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All Journal Jurnal Pengabdian Polinema Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Jurnal Pengabdian Mandiri ELPOSYS: Jurnal Sistem Kelistrikan International Journal of Humanities and Social Science Studies Energy: Jurnal Ilmiah Ilmu-ilmu Teknik
Ahmad Hermawan
Politeknik Negeri Malang
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Studi Perencanaan Penerangan Jalan Umum Panel Surya di Kelurahan Gading Kasri Kecamatan Klojen Asfari Hariz Santoso; Ahmad Hermawan; Muhammad Azzam Wian Panantuan
Elposys: Jurnal Sistem Kelistrikan Vol. 8 No. 1 (2021): ELPOSYS vol.8 no.1 (2021)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v8i1.29

Abstract

Malang City is a city that has an increasing need for electrical energy in the technological era, which today is very much needed in fulfilling daily life, both for household, social and industrial needs. One of them is the supply of electrical energy for Public Street Lighting (PJU). If you only rely on the supply of electrical energy from grid, this is a heavy burden that must be borne by the Malang City Regional Budget to pay the electric energy consumption bill for the PJU. This study aims to determine the comparison of the use of conventional PJU with solar powered PJU (PJUTS) in the area of Gading Kasri Village, Klojen District, Malang City both in terms of technical installations which include solar panels, batteries, and charger controllers as well as from an economic point of view. That shines for 5 hours every day, the solar panel power specifications are 240 Wp with 37 points of light. Budget calculations using the ACS (Annual cost system) which is obtained in the 16th year the difference from the initial investment costs and revenue from sales met at BEP (break event point) amounting to Rp. 256,761,376.00.
Analisis Keseimbangan Beban dan Harmonisa Di Gedung Graha Polinema Ahmad Hermawan; Mudjiono; Chandra Wiharya; Siffa Seftiana
Elposys: Jurnal Sistem Kelistrikan Vol. 8 No. 3 (2021): ELPOSYS vol.8 no.3 (2021)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v8i3.76

Abstract

A large load imbalance is caused by the use of single-phase loads in a three-phase system, and poor harmonics are caused by non-sinusoidal loads, which result in losses in the network and poor quality of power distribution. This study aims to monitor and analyze load balance and harmonics in the Graha Polinema Building at Politeknik Negeri Malang. The research is a survey and case study using primary data obtained through direct measurement using a Web-Based Power Quality Meter (PM 5110) to gather data from each SDP panel, and secondary data through observation. From this study, the highest current imbalance value of 133.50% was found in the North 4th Floor SDP Panel of the Grapol Building, exceeding the IEEE 1159-2009 standard, which sets the limit for load imbalance at 30%. Current Harmonic Distortion (IHD) occurred in 8 SDP panels, except for the North and South Water Pump Panels. Total Demand Distortion (TDD) for all panels was within the standard limits. Total Harmonic Distortion (THDv) for all panels was also within the standard limits, with the highest value of 2.37% found in the North 4th Floor Panel.
Analisis Perencanaan Pemasangan Recloser pada Penyulang untuk Meminamilisr Pemadaman Wijaya Kusuma; Ahmad Hermawan; Aulia Nur Rahma; Muhammad Ilham Rifqi
Elposys: Jurnal Sistem Kelistrikan Vol. 8 No. 3 (2021): ELPOSYS vol.8 no.3 (2021)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v8i3.83

Abstract

One of the feeders in PT. PLN (Persero) ULP is the Selecta Feeder. Based on data, the Selecta Feeder experienced 34 disturbances from January 2018 to November 2020, with a feeder load of 164 A, 106 distribution transformers (GTT), and a network length of 62.602 km. The Selecta Feeder is the feeder with the highest load in PT. PLN (Persero) ULP Batu, and the high number of disturbances on the Selecta Feeder will have a significant impact on the revenue of PT. PLN (Persero). There are 7 load break switches (LBS) and 1 recloser installed on the Selecta Feeder. During the period of January 2018 to November 2020, most of the disturbances occurred due to external factors and happened in sections 3 and 4. Therefore, it is necessary to ensure the continuity of electrical energy supply on the Selecta Feeder to anticipate widespread power outages by adding an installed recloser. A recloser is a protective device that can detect excessive current due to short circuits between phases or phase-to-ground faults, where the recloser automatically interrupts and recloses the circuit with an adjustable time delay.
Analisis Audit Energi di Hotel Kota Malang Menggunakan Web-Based Monitoring System Ahmad Hermawan; Rosina Ahda Dini; Chandra Wiharya
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 2 (2023): ELPOSYS vol. 10 no. 2 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i2.1219

Abstract

Energy audits are evaluation activities carried out to determine the condition of the energy used in a system. Audits are carried out to provide the efficiency of an electrical system. The first energy audit conducted was the initial energy audit. By using the specifications of the installed electrical system and using monitoring data. Followed by a detailed energy audit, to determine the condition of a more specific electrical system. The data used is measurement/monitoring data, and data calculations are then compared with the provision of the electricity standard. In calculating the intensity of energy consumption in the initial energy audit process, the IKE Fave Hotel results were still by the standards with an IKE value of 213.59 kWh/m2. Meanwhile, based on the results of a detailed energy audit, it was found that the lighting system and cooling system were not up to standard because the lux results for several rooms showed results that were less than the lux standard. Thus, it is necessary to provide recommendations for improvements to the lighting and cooling system. Providing lighting recommendations can use dialux as a calculation comparison. In the lighting system, it is necessary to replace some of the lamp specifications installed because they are far from standard values. This also needs to be done on the cooling system, by replacing the installed air conditioner according to existing calculations. This replacement was carried out to save energy for the continuity of the hospitality industry process at Fave Hotel Malang.
Analisis Kualitas Daya dan Rekomendasi Perbaikan Sistem Kelistrikan di Gedung Perhotelan Ahmad Hermawan; Jamik Apriliasari; Chandra Wiharya
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 2 (2023): ELPOSYS vol. 10 no. 2 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i2.1220

Abstract

Fave Hotel is supplied by 2 PLN transformers, with capacities of 250 kVA and 100 kVA. The supply of electrical energy at Fave Hotel is very important because the possibility of disruption is very large in the process of distributing electrical energy. Load variations at Fave Hotel will also affect the electrical system. One of the disturbances that occur in the electric power system is power quality. The research method used is data observation, monitoring, analysis, and simulation using ETAP software. Based on the results of the analysis of various power quality parameters that were measured, the power quality conditions of the fave hotel were not good. A power quality problem has been identified at Fave Hotel, specifically a voltage imbalance occurs at MDP 2 on weekend is 2.64%. In addition, there is also a current imbalance occurs at MDP 1 and 2 during both weekends and weekdays, with the largest current imbalance occurs at MDP 2 on weekdays is 64.15%. To overcome the problem of voltage imbalance and current imbalance, it is recommended to perform load balancing on the system or install compensating equipment such as a voltage compensator.
Audit Energi dan Rekomendasi Penghematan Energi Listrik di Gedung Rumah Sakit Muhammad Fahmi Hakim; Ahmad Hermawan; Fandi Kurniawan; Kumala Mahda Habsari
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 2 (2023): ELPOSYS vol. 10 no. 2 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i2.2522

Abstract

The actions for electricity consumption more efficiently is reducing the amount of electricity consumption of renewable and non renewable energy for human living sustainability or we can called energy conservation. Energy audit purposed to the energy utilization evaluation progress, is still infrequently applied in Indonesia, especially in huge building. The analyzing result of A building in the Dr. Radjiman Wediodiningrat Asylum, the first value audit of Energy Use Intensity (EUI) is 21,944 kwh/m2/year it was include the criteria of efficient. This EUI value is below EUI research that was issued by ASEAN-USAID in 1992 and the EUI value average of hospital in Korea, while detailed audit obtained energy value of EUI is 23,213 kWh/m2/year is included to the criteria of efficient. The THDi value in electricity system is IR= 33,2%, IS=24,48%, IT= 34,85% and IN=122,96%, the THDi value is not complied with IEEE 519-2014 permission which is the value is ISC/IL> 1000 has restraint value by 20%. Whereas the THDv value in electricity system is VR-S= 2,04%, VS-T= 2,11%, VT-R= 1,97%, VR-N= 3,83%, VS-N= 3,69%, VT-N= 3,73% and VL-L= 2,04% and VL-N= 3,75%, the value of THDv is complied the permissiod by IEEE 519-2014 with Voltage system of identification by 0,4 kV, therefore the limit value of THDV which permitted is 8%.
Perencanaan dan Evaluasi Sistem Penyulang Ganda Sebagai Backup Power Supply PT. X Muhammad Fahmi Hakim; Ahmad Hermawan; Habib Priyo Budianto; Yudistiro Yanuarianto
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 2 (2024): ELPOSYS vol. 11 no. 2 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i2.5155

Abstract

In order to meet the needs of electrical energy, PT X. receives electricity supply from PLN as the main source while the generator with a total capacity of 2.228,5 KVA as a backup electricity supply. PT X plans to procure a double feeder as a backup power supply to replace the generator set in the hope of getting a more economical backup power supply. So, the purpose of this study are analyzing the planning and technical calculations for the construction of a premium feeder, analyzing the comparisono f the use of generator setting with double feeder from economic point of view, and analyzing the comparison of the efficiency of using generator setting with the use double feeder. The method used in this study was the IRR (Internal Rate of Return) method to determine the value of the rate of return on investment while the SAIDI – SAIFI data was used to determine the reability of the feeder. The result of this research is the double feeder using MVTIC type construction. For Rp/kWh, the use of premium service, namely B3/TM customers is Rp. 1.162,78 per kWh and B2/TM Rp. 1.574,7 per kWh, while Rp/kWh generator setting is Rp. 4.003 per kWh. Meanwhile the double feeder IRR values is 44% and the generator setting is 24%. So, it is more efficient to use PLN premium service.
Evaluasi Ketidakseimbangan Beban Pada Penyulang Unicora Ahmad Hermawan; Ahmad Koimam; Rhezal Agung Ananto; Satria Luthfi Hermawan
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 2 (2024): ELPOSYS vol. 11 no. 2 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i2.5191

Abstract

Load imbalance in electrical distribution transformers can lead to significant power losses and decreased efficiency in electrical distribution systems. This study focuses on the load imbalance problem at the Unicora feeder of PT PLN (Persero) ULP Singosari, which hinders optimal operational efficiency. The purpose of this research is to evaluate the extent of load imbalance, its impact on power losses, and the effectiveness of load balancing interventions in mitigating these losses. The methodology includes phase load measurements from February to September 2021, analysis of load imbalance, and power loss simulations using ETAP 12.6.0 software. The study's important findings indicate that the average load imbalance decreased from 34% to 21% after implementing load balancing interventions. Concurrently, power losses in the neutral conductor were reduced from 106.3 kW to 78.0 kW. ETAP simulations revealed a total power loss of 773.5 kW in the Unicora feeder, underscoring the significant impact of load imbalance on system efficiency. The implications of this research are crucial for operational practices at PT PLN (Persero) ULP Singosari. The findings demonstrate that effective load balancing can significantly enhance distribution efficiency, reduce operational costs, and improve the reliability of electricity provision. This study advocates for continuous monitoring and adaptive management of load distribution in electrical networks to maintain optimal performance and sustainability.
Evaluasi Kinerja Sistem Proteksi Penyulang Trawas PT. PLN (PERSERO) ULP Pandaan Satria Luthfi Hermawan; Hilman Rangga Nugraha Hermawan; Priya Surya Harijanto; Ahmad Hermawan
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 2 (2024): ELPOSYS vol. 11 no. 2 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i2.5249

Abstract

The primary objective of this research was to minimize disruptions in the feeder at ULP Pandaan by analyzing the coordination between recloser outgoing and incoming feeders. This study addressed the frequent issue of recloser trips, which caused instability in power supply. The purpose of this research was to provide conclusions and solutions to mitigate these disruptions. The methodology involved a detailed analysis of OCR (Over Current Relay) settings for protective devices on Trawas feeder. This included measurements of primary current settings and TMS (Time Multiplier Setting) values using both standard inverse and normal inverse configurations. Specific settings, such as 25518 A for the Trawas Recloser primary current and a TMS of 0.07, were determined to yield optimal performance. Additional settings for the Outgoing CB (Circuit Breaker) (357061 A, TMS 0.04) and the Incoming CB (181865 A, TMS 1.0) were also established. The important findings revealed that these settings significantly enhanced the reliability of the protective devices, ensuring better coordination between the recloser and CB systems. The implications of this research were substantial, as the optimized settings were expected to reduce the frequency and impact of feeder disruptions. This improvement in system reliability directly benefited both the electricity provider, PT. PLN (Persert), and the consumers by providing a more stable and efficient power supply. In conclusion, this study offered a comprehensive analysis and practical solutions for enhancing the protection system's performance on the Trawas feeder, which could be applied to similar electrical distribution networks to achieve better stability and reliability.
The Concept of Tolerance in Western Civilization in the Perspective of the Quran and Hadith: A Comparative Analysis Kharis Nugroho; Apriantoro, Muhamad Subhi; Ahmad Hermawan; Miftah Khilmi Hidayatullah
Ethica: International Journal of Humanities and Social Science Studies Vol 1 No 1 (2023): SEPTEMBER
Publisher : Global Research Network

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to explain the concept of tolerance practiced by Western societies in the perspective of the Qur'an and Hadith . This research used techniques of content analysis and library research to analyze the data and interpret its meaning since the researcher relies heavily on documents as the main sources of information. From this research it is concluded that the formation of the pattern of tolerance doctrine between Islam and the West is very different. The doctrine of tolerance in Islam is not shaped by history, but is an integral part of the Islamic heritage. Unlike the West, whose doctrine of tolerance is shaped by history due to abuse of power. That is why equating the Islamic doctrine of tolerance with the doctrine of tolerance in the West is incorrect.
Co-Authors Afidah Zuroida Afidah Zuroida Afriana Viro Fadilla Afriana Viro Fadilla Ahmad Koimam Alif fitrah Amaral, Hanifiyah Darna Fidya Ananto, Rhezal Agung Asfari Hariz Santoso Aulia Nur Rahma Budi Eko Prasetyo Candra Wiharya Chandra Wiharya Chandra Wiharya Fahmi Hakim, Muhammad FANDI KURNIAWAN Florentina Berlian Suryaningtyas Galih Hardika Sakti Habib Priyo Budianto Handani, Galuh Prawestri Citra Hanifiyah Darna Fidya Amaral Hanifiyah Darna Fidya Amaral Hilman Rangga Nugraha Hermawan Irwan Heryanto/Eryk Jamik Apriliasari Kalam Syamsul Arifin Kharis Nugroho Kumala Mahda Habsari Lukman Hakim Lukman Hakim Miftah Khilmi Hidayatullah Mohammad Noor Hidayat Mudjiono Mudjiono Muhamad Subhi Apriantoro Muhammad Aden Herry Prakoso Muhammad Aden Herry Prakoso Muhammad Azzam Wian Panantuan Muhammad Fahmi Hakim Muhammad Ilham Rifqi Nurhayati Nurhayati Popong Effendrik Priya Surya Harijanto Priya Surya Harijanto Priya Surya Harijanto Rachmat Sutjipto Rahman Azis Prasojo Reyhan Fadhlur Rahman Roby Tri Stya Hutama Rohmanita Duanaputri Rohmanu Dwi Kuncoro Ronilaya, Ferdian Rosina Ahda Dini Ruwah Joto Safira Azizah Sapto Wibowo Satria Lutfi Hermawan Satria Luthfi Hermawan Satria Luthfi Hermawan Shafira Irmadhani Hidayat Siffa Seftiana Sigit Setya Wiwaha Sugeng Harianto Wijaya Kusuma Yudistiro Yanuarianto Zahra Mulia Sari Zulvina Arifah